Water in your basement from snowmelt? Why a battery backup sump pump matters

Ottawa's spring melt pushes more water into sump pits than any other time of year, often while storms knock out the power. A battery backup pump is how basements stay dry when the main pump can't keep up.

Long gravel bed in an outdoor trench bordered by snow, with exposed pipe ends near a fence.

Filed under Basement Flood Protection · By Michael and the team at The Irish Plumber

Why the melt is so hard on basements

When a winter's snow melts fast, especially with rain on top, the ground around your foundation fills up. Weeping tile carries that water to the sump pit, and the pump runs again and again. That's when tired pumps fail. A spring storm can also cut the power, and then nothing pumps at all.

How a battery backup sump pump works

A second pump sits in the same pit, slightly higher than the main one. It runs from a deep-cycle battery kept charged by a charger plugged into the wall. If the water rises past the main pump, whether because the main pump has failed, can't keep up, or has lost power, the backup switches on.

About the batteries

  • Use a deep-cycle battery designed for repeated draining, not a car battery.
  • Bigger batteries run longer, but no battery runs for days. How long it lasts depends on how much water comes in.
  • Most batteries need replacing every 3 to 5 years. Many systems have a test button and an alarm for a weak battery.
  • Add a high-water alarm, or a model with a phone alert, so you know when the backup is running.

What installation involves

We check your pit, your main pump and the discharge line, then install the backup pump with its own check valve and discharge connection, mount the battery and charger safely off the floor, and test the whole system. Most installs take a few hours.

Ready for the spring melt?

Book a sump check and a battery backup installed before the snow goes.

The City rebate

For eligible homes built before 2004, the City rebates up to $1,500 for a sump pump with battery backup in an existing pit. The permit must come first. How it works.

Questions Ottawa homeowners ask us

How long will a battery backup sump pump run?
It depends on battery size and how much water comes in. It could be hours of continuous pumping, or longer with intermittent use. It buys time, not days.
Can I install a battery backup on my existing sump pump?
Usually yes. The backup pump goes in the same pit with its own check valve. We check that your pit and discharge line suit it.

Keep water moving when the power goes out

A battery backup sump pump sized for your home, installed and tested before the melt.

Get Service(613) 294-0864